http://reply.papertrans.cn/1/42/4180/4180-11.png
Submitted on: 03 October 2006.
Revised on: 29 January 2007.
Accepted on: 12 March 2007.
___________________BRITISH DENTAL JOURNAL---SPRINGERNATURE
Submitted on: 04 June 2000.
Revised on: 07 September 2000.
Accepted on: 27 October 2000.
___________________BRITISH DENTAL JOURNAL---SPRINGERNATURE
Submitted on: 06 May 2010.
Revised on: 12 June 2010.
Accepted on: 30 July 2010.
___________________BRITISH DENTAL JOURNAL---SPRINGERNATURE
http://reply.papertrans.cn/1/42/4180/4180-15.png
http://reply.papertrans.cn/1/42/4180/4180-16.png
http://reply.papertrans.cn/1/42/4180/4180-17.png
http://reply.papertrans.cn/1/42/4180/4180-18.png
http://reply.papertrans.cn/1/42/4180/4180-19.png
http://reply.papertrans.cn/1/42/4180/4180-20.png